Thread: ENGINE NOISE...

Can remember having the same problem on our V81 Disco and I can remember a mate putting a Nulon or Morey's product in? Check these two out, I know our Disco made the same noise until warmed up, and it only had 139,000klm on the clock, and we traded the Disco in with around 190k so check it out it worked for us [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]

Originally posted by LandyAndy
I have the same problem at the moment in my 202 powered Ser3,that has developed since the weather has cooled down.Im running penrite HPR50 and suspect its too thick till warmup.

I had that problem before I changed to penrite, but I use HPR40 in the 173 now, and since I changed it doesn't do it at all anymore. It used to before warm up, but not now.

Some years ago when I was running the 3.5 in the RR I had a considerable amount of sludge buildup under the rocker covers, having been around for some time I recalled "flushing Oil" but it is no longer available so I rang Shell and they advised me that the use of deisel oil would do the job of cleaning the internals of the engine. They suggested running it for around 1000 Km's and replacing with the recommended oil.
I did this and was surprised at the amount of gunk that the deisel oil removed from the engine.
Hope this is of assistance.

Hi Matbor
Have a look at the specs on both petrol and diesel oils,I think you will find they"overlap".The main difference is diesel oils contain detergents to remove the soot in the diesel burning process.These detergents can be usefull in a petrol engine as long as it isnt badly worn.
I once worked on a huge market garden,the young blokes always pinched oil(diesel for the tractors) for thier thrash heaps.When they blew their motors up they wouldnt belive it was due to using diesel oil in a worn out motor and thrashing it.The oil removes the carbon build up in the motor which is actually providing connpression via the rings.
In a health motor the diesel oil will only do good if used for short periods
Andrew

Spoke to my mechanic friend today and he wants to have a quick look at the car on saturday morning, but he thinks it just needs a clean out, as you all have just suggested.

Very interesting about diesel oil and using it in a petrol engine, will have to remember that. Do you think it would be a good idea to do that every say 20000km's for example, on a engine that isn't wore of course !!

matt.